Fahrenheit Sensor LM34 (CB14400E)

This circuit measures temperatures from +5 to + 300º F using a sensor from National Semiconductor not very easy to obtain.

Audio Output Stage (CB466)
This simple circuit can be used as audio output stage for intercoms, experimental radios and other low...
Solar Radio (CB11510E)
This simple solar powered MW receiver was obtained from a 1974 Popular Electronics. The transistor can...
Simple Flashlight Using LM3909 (CB25428E)
This flashlight project with a blinking light that makes it easy to find was found in the January...